Character mistake: When he called for a dinner reservation for 12 at his home it should have been 13, as he put 13 men down. (00:32:05)
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Suggested correction: Actually 14.
It's possible he simply miscounted in the heat of the moment. I'm not saying you're wrong was John doesn't seem like the type to make this sort of mistake but it could be let off as a character mistake rather than a movie mistake.
A character mistake is a valid movie mistake and this entry is listed as such.
